Create build.yml

Author: p-web-git

.github/workflows/build.yml

@@ -0,0 +1,43 @@
+name: build-kopia-android
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: self-hosted
+    env:
+      ANDROID_NDK_ZIP: android-ndk-r28c-linux.zip
+      ANDROID_NDK_DIR: android-ndk-r28c
+      # go install will put the binary here
+      GOBIN: ${{ github.workspace }}/out
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.22.x'
+
+      - name: Get Android NDK
+        run: |
+          wget https://dl.google.com/android/repository/${ANDROID_NDK_ZIP}
+          unzip -q ${ANDROID_NDK_ZIP}
+
+      - name: Build Kopia (Android/arm64, CGO, netcgo)
+        run: |
+          export ANDROID_NDK="${PWD}/${ANDROID_NDK_DIR}"
+          export CC="$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang"
+          export CXX="$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang++"
+          export GOOS=android GOARCH=arm64 CGO_ENABLED=1
+          mkdir -p "$GOBIN"
+          # netcgo ensures the cgo DNS resolver is used
+          go install -tags netcgo github.com/kopia/kopia@v0.21.1
+          ls -l "$GOBIN"
+
+      - name: Upload Android binary
+        uses: actions/upload-artifact@v4
+        with:
+          name: kopia-android-arm64
+          path: out/kopia